Thanks to nephew @j95 exposing me to how great it is, I finally decided to spring for the full "master license" of JRiver Media Center so I could also install and register it on Linux, seeing that I am frequently using Linux on both the desktop and laptop now. This is on the desktop, Pop!_OS running Cinnamon desktop. Still no 5.1 functionality, but it sounds awesome on Linux with this media center. At least the subwoofer works and rattles the windows nicely. Been using this media center on Windows for a good while now. Thanks @j95! Even the advanced JRiver Media Center features, like internet lyrics look-up, works great on Linux.